US666865A - Conveyer. - Google Patents

Description

No. 666,865. Patented Jan. 29, I90l. E. HE LFENSTELLER, In.

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ERNEST HELFENSTELLER, JR, OF ST. LOUIS, MISSOURI.

CONVEYER.

SPECIFICATION forming part of Letters Patent No. 666,865, dated January 29, 1901.

Aonlication filed October 16, 1900.

To all whom, it may concern.-

Be it known that I, ERNEST HELFENSTEL- LER, J r., a citizen of the United States, residing at the city of St. Louis, State of Missouri, have invented a certain new and useful Improvement in Conveyers, of which the following is a full, clear, and exact description, such as will enable others skilled'in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which Figure l is a plan view of my improved conveyer. Fig. 2 is an enlarged sectional view on line 2 2, Fig. 1. Fig. 3 is a side elevational view of one of the cams and conveyor-bars. Fig. 4 is a similar view showing the near wall of the cam-block removed. Fig. 5 is a detail View of the cam-block. Fig. 6 is a modified form of conveyor-bar, and Fig. '7 is a crosssectional view of the same.

This invention relates to a new and useful improvement in conveyers of that type wherein movable bars support the articles to be moved, means being provided to impart cycloidal movement to the conveyer-bars,whereby the articles are advanced step by step over said bar.

My present invention consists in the arrangement, construction, and combination of the several parts, all as will hereinafter be de scribed and afterward pointed out in the claims.

In the drawings, A indicates the walls of the conveyor, in which are mounted shafts B, one end of said shafts carrying bevel-gears b, with which mesh beveled pinions c on a driving-shaft O.

D indicates cams fixed on the shafts B, said cams being preferably arranged in pairs, as shown, the cams of each pair being oppositely placed.

E indicates the conveyor-bars, which are preferably made in sections,'the ends of the bars terminating above the centers of their respective supporting-cams.

F indicates cam-blocks in the form of saddles, which are grooved in their upper faces to receive the bars E, the lower faces of said cam blocks or saddles being provided with a cam-seat, which in the construction shown in Figs. 1 to 5 extends sufficiently high to cut Serial No. 33,212. (No model.)

through the bar-receiving groove, whereby the conveyer-bars extend into the cam-seat, as shown in Fig. -l. The cams are preferably provided with grooves to receive the ends of the con veyer-bars, whereby said bars serve to prevent lateral displacement of themselves and of their carrying saddle-blocks. Where the conveyer-bars are exposed to varying temperatures, it is obvious that expansion and contraction would destroy the proper relation between the parts, and especially so if the conveyer was of any length, and I therefore provide means to accommodate this expansion and contraction, whereby the parts will at all times maintain proper relation to each other. I accomplish this by providing slots in either or both the conveyer-bars and saddle-blocks for the reception of the attaching-bolts f, (see Fig. 4,) said slots or openings being elongated in the direction in which the parts expand or contract. The conveyer-bars are also spaced apart, so as to permit of independent expansion without disturbing the relative position of their adjacent companions. These conveyer-bars may have any desired cross-sectionsuch, for instance, as T, angle, I, channel, or other standard or special shapes. In Figs. 6 and 7 I have shown an adaptation of a special shape, in the form of an I-bar E laid on its side, the channel in the upper face thereof receiving and carrying magnesia blocks, fire-brick, or other suitable non -heat-conducting material E While the channel in the lower face receives a saddle-block F, seated upon a cam. In this instance there is no central web extending through the saddle-block, and therefore the cam need not be provided with a peripheral groove; but the flanges of the'conveyer-bar are utilized to hold the bar in position on the cam and the saddle-block in its proper position by extending down on each side of the cam, as shown in Fig. 7. In this form the openings for the attaching-bolts between the saddle and bars are preferably elongated in a direction that the parts tend to expand and contract.

From the above it will be seen that the device is extremely simple in the employment of conveyor-bars of such shape that they project downwardly beyond the saddle-block at some point to engage the operating-cams and hold themselves and the saddle-blocks in position. By making the conveyer-bars in short sections repairs may be easily and quickly made, and when the saddle-blocks are worn they may be renewed with but little expense. The operation of my improved conveyer is evident from an examination of the drawings, wherein it will be observed that a pair of bars alternately support the article to be conveyed and advance said article to a point where it is taken by the rising pair of bars, the descending pair receding until again in position to take the article and advance it.

It is obvious that any number of cams may be arranged on the shaft, whereby any desired number of conveyer-bars may be employed, and, further, that these cam-shafts may be arranged as close together as desired. I am aware that minor changes in the arrangement, construction, and combination of the several parts of my device can be made and substituted for those herein shown and described without in the least departing from the nature and principle of my invention. For illustration, instead of using bevel-gearing to drive the shafts B chains and sprockets may be employed or worm-gearing may be used. It is also obvious that the joints of the conveyer-bars may be located elsewhere than over the centers of the cam-blocks. Also that instead of arranging the oppositelyplaced cams on the same shaft separate shafts can be arranged close together, with the cams on each shaft set in the same direction, but opposite to the cams on the companion shaft, and it is also evident that, if desired, bifurcated standards may be arranged to guide the eonveyer bars in their vertical movement, in which event the means provided on said bars for preventing lateral displacement thereof relative to their respective cams can be dispensed with.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a conveyer, the combination with a plurality of driven shafts rotating in the same direction and at uniform speed, of a plurality of oppositely-placed cams arranged on each ofsaid shafts, saddle-blocks riding upon said cams, and conveyer-bars secured to said saddle-blocks; substantially as described.

2. In a conveyer, the combination with a plurality of driven shafts, of cams on said shafts, saddles arranged on said cams, and conveyer-bars secured to said saddles, said conveyer-bars having a member extending beneath some portion of the saddle to engage the cam and hold the parts against lateral displacement; substantially as described.

3. The combination with adriven shaft, of a cam mounted thereon, a cam-block, and conveyer-bars whose ends terminate in said cam-block, the ends of said conveyer-bars having loose connections with the cam-block; substantially as described.

4. In a conveyer, the combination with driven shafts, of oppositely-placed cams arranged thereon, cam-blocks riding upon each cam, conveyor-bars extending from one camblock to the next, and having one member engage the cam to prevent lateral displacement of the parts, and loose connections between the cam-block and said conveyer-bars to accommodate expansion and contraction of said parts; substantially as described.

5. The combination with a driven shaft, of a cam arranged thereon, a cam-block riding upon the cam, a conveyer-bar having a member extending beneath the cam-block atsome portion to prevent lateral displacement, and non-heat-conducting material carried by said eonveyer-bar; substantially as described.

6. The combination with a driven shaft, of a cam mounted thereon, a cam-block, an I- shaped conveyor-bar having its depending flanges engaging the cam, and non-heat-conducting material arranged between the upwardly-extending flanges of the conveyerbar;

substantially as described.

In testimony whereof I hereunto alfix my signature, in the presence of two witnesses, this 12th day of October, 1900.

ERNEST HELFENSTELLER, J R.

Witnesses:

WM. H. Soo'rr, GEORGE BAKEWELL.

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